भारत में, प्रथम 20-वर्षीय सड़क योजना विकास कार्यक्रम (1943-1963) को ______ कहा गया था।

As per the rationalized numbering system for National Highways in India, consider the following statements: i) All primary National Highways have single-digit or double-digit numbers. ii) All north-south oriented National Highways have odd numbers. Which of the above statements is/are correct?

Which four major metropolitan cities are connected by the Golden Quadrilateral Highway system?